[Hosting] Can’t access SFTP on staging site.

I’m currently working on the staging domain as I have had a bad gateway message on em*****or the last few days + I am making changes but now even e*********wpmudev.host is returning the same error.

And via ftp I get Status:
Connecting to em*********.wpmudev.host…
Response: fzSftp started, protocol_version=9
Command: open “j_ed@**********8host” 22
Command: Trust new Hostkey: Once
Command: Pass: **********************************
Error: Authentication failed.
Error: Critical error: Could not connect to server